Sewing-machine shuttle.



M. A. ROSS.

SEWING MACHINE SHUTTLE.

APPLICATION FILED FEB. 2, 1912.

Patented Oct. 14, 1913.

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MABLE A. ROSS, 0F CALEXICO, CALIFORNIA.

SEYVING-MAGHINE SHUTTLE.

noraseo.

Application filed February 2, 1912.

To all whom it may concern Be it known that I, MABLE A. Boss, a citizen of the United States, residing at Calexico, in the county of Imperial and State or California have invented new and useful Improvements in Sewing-Machine Shuttles, or which the following is a specification.

This invention relates to sewing machine shuttles, and has for an object to provide a shuttle which will be so constructed whereby it can receive and operatively support and hold an ordinary stock spool of cotton which will etiectively serve the purpose of a bobbin.

Another object of the invention is to provide a shuttle which will include a spool spindle and removable means whereby the spool can be readily fitted to the spindle or removed therefrom as the occasion may demand.

in the drawing, forming a portion of this specification and in which like numerals of reterence indicate similar parts in the several views:-nigure 1 is a plan view of a shttlc constructed in accordance with my invention. 2 is a longitudinal section through a portion of the shuttle. is a perspective view of the retaining device.

The shuttle 1 herein shown is of well known substantially cylindrical construction with the exception of the bobbin. support. This bobbin is provided with a fixed longitudinally extending spool spindle 2 which is designed to rotatably receive an ordinary stock spool of thread whereby the use ot the old and well known form oi bobbin can be entirely eliminated and the objections arising through the constant refilling ot the bobbin entirely obviated. At one end, the spindle has formed therein concentric grooves 4:, two of such grooves being herein shown, but it is stated that the use of any suitable number of grooves may be resorted to so that ditt-erent adjustments of the retaining device 5 can be eli ectively accomplished. The retaining device comprises a springy member of substantially split sleeve form which is provided at its outer end with a knurled manipulating portion 6 and at its inner end with radial springy jaws 7 which project at diametrically opposite points from the outer side of the cylinder. The sleeve 5 is provided interiorly with an inte Specification of Letters Eatent.

Patented Got. 14,1913.

Serial No. 674,859.

gral annular rib 8 which can be interchangeably fitted in the grooves 4 so that any desired adjustment of the device 5 can be accurately effected. By providing the retaining device 5 it is seen that when operatively associated with the spindle 2, as shown in Fig. 2 of the drawing, it forms a stop to prevent the accidental displacement of the spool from the spindle. The device 5 can be adjusted to cause the jaws 7 thereof to bear lightly against one end 0]": the spool so as to hold the spool against longitudinal movements on the spindle. The jaws 7 by hearing against one end oi the spool as just described also serve to hold the spool under like tension to prevent a too rapid unwinding of the thread.

I claim:

1. A stationary spool spindle having at its extreme outer end, a series of concentric grooves adapted to rotatably support a stock spool of thread, and means rotatably fitting the spindle and having a series of integral ribs formed interio-rly thereof, said means being disposed at the extreme free end of the spool spindle, and the ribs thereof adaptcd to interchangeably fit the grooves of the spindle to hold said spool against displacementtrom the spindle, and a yielding portion formed integral with said means and projecting at diametrically opposite points from said means and adapted to bear directly against one end of the spool.

2. A spool spindle adapted to receive an ordinary stock spool of thread and adapted to rotatablv support the spool thereon, and a split cylinder reinovably fitting the spindle and disposed at one end of the spool to hold the latter against displacement from the spindle, the said cylinder having formed integral and tlush with its innermost extremity yielding portions, said yielding poi.- tions projecting at diametrically opposite points from the outer side of the cylinder and adapted to bear directly against one end of the spool.

In testimony whereof I atlix my signature in presence of two witnesses.

MABLE A. ROSS.

Witnesses T. F. RAMSY, J. A. HART.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. G. 

